When I right click on the desktop to create a new Microsoft Powerpoint Presentation, the icon is incorrect.
What I am expecting is:

But what I get is:

Despite my best efforts, (rebuiding icon cache, re-establishing file associations, etc), I just cannot get the icon to revert to the "full P". There is no problem with the similar Excel and Word icons. The weird thing is that on every re-start, the correct
icon is displayed for a milli-second before it reverts to the 'wrong" image.
Ideas, anyone?